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https://github.com/CLIUtils/CLI11.git
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d621658e6d
* add an example where the name of the enum is printed through a stream output function, which subverted the checkTransformer conversion and prevented conversion of the enumeration. * add missing 'typename' * try a simpler version of the value_string using const reference for all overloads * use auto return type to match to_string return type in value_string * remove extra spaces
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#include <CLI/CLI.hpp>
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enum class Level : int { High, Medium, Low };
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// this breaks the code
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inline std::ostream &operator<<(std::ostream &o, const Level &l) {
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switch(l) {
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case Level::High:
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o << "High";
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break;
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case Level::Medium:
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o << "Medium";
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break;
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case Level::Low:
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o << "Low";
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break;
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}
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return o;
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}
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int main(int argc, char **argv) {
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CLI::App app;
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Level level;
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// specify string->value mappings
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std::vector<std::pair<std::string, Level>> map{
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{"high", Level::High}, {"medium", Level::Medium}, {"low", Level::Low}};
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// checked Transform does the translation and checks the results are either in one of the strings or one of the
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// translations already
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app.add_option("-l,--level", level, "Level settings")
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->required()
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->transform(CLI::CheckedTransformer(map, CLI::ignore_case));
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CLI11_PARSE(app, argc, argv);
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// CLI11's built in enum streaming can be used outside CLI11 like this:
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using namespace CLI::enums;
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std::cout << "Enum received: " << level << std::endl;
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return 0;
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}
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